Mobile phone AT&T guidance?
I connect my China/ and Nokia phone using Bluetooth COM PORT CONNECTION. It says COM at 5.
How can I use this connection to send and receive SMSes using C#? For example, are there some resources to consult, or how would some example code look like?
Are you using a bluetooth modem driver? If you are & its presenting the phone as a serial device on COM5 then you should be able to access it in the same was as any modem.
Try the GSMComm library, it also has a demo app you can use to test.
I did a quick Google search, and I can't find a builtin API for exposing SMS capability via Bluetooth. However, from searching the documentation on the Nokia site, it appears the Symbian C++ libraries have an API for sending and receiving SMS, as well as libraries for interfacing with the bluetooth stack. You'll need to install the Symbian C++ IDE and toolchain for building apps. You can find information here on how to do that.
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I was wondering if it is possible to access an HTTP server running on the onboard computer from a device (mobile or laptop) connected to the remote control on the ground. From the documentation, the uplink/downlink speeds of 24kbps / 16Mbps are satisfactory for our application.
Going over the available SDKs, the "SDK Interconnection" or "MOP" caught my attention that offers send and receive functions for Onboard and Mobile SDK (Payload as well). However, this means that the send/receive from the ground are exposed on an android based SDK, i.e.
UART Lightbridge USB
Onboard PC ---> OSDK ----> DJI drone ------------> R.C. ----> Android ---> MSDK
From this alone, it seems that we would need to develop network interfaces that are sending and receiving via the corresponding OSDK and MSDK methods. This might be easier said than done - especially for the android device.
My questions are:
Is there a smarter way to do this?
Is the implementation of Mobile SDK available? If so we can port the send/receive code to a Linux box to simplify the code
The MSDK is heavily encrypted.
I've been doing some reverse engineering on it. It's not easy, recommend older versons since they not encrypted.
There's no opensource if that what you asked. Will never be.
Everything sent from the drone is dumldore messages. You can decode them without the MSDK, but it's not completly straightforward.
The messages are partly documented here:
https://github.com/o-gs/dji-firmware-tools/blob/master/comm_dissector/wireshark/dji-dumlv1-proto.lua
If I were you I would connect a 4g modem to the onboard computer. Saves you a lot of time.
According to Microsoft's latest docs:
Do I have to pair Bluetooth devices before using them? You don't have
to for Bluetooth RFCOMM (classic) devices. Starting with Windows 10
release 1607, you can simply query for nearby devices and connect to
them. The updated RFCOMM Chat Sample shows this functionality.
However, when I try to connect to my devices using this chat sample, I get a notification that asks me to "set up the device", like I was going through a normal pairing process.
Am I missing something?
The snippet of code that I changed from the sample:
var rfcommServices = await bluetoothDevice.GetRfcommServicesAsync(BluetoothCacheMode.Uncached);
Taken from msdn resources:
Windows 10 Mobile is currently limited to connections with only paired
devices. In Windows 10, you can programmatically pair/unpair. See
scenarios 8 and 9:
https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/DeviceEnumerationAndPairing
Here’s is the related MSDN documentation on pairing and the relevant
device selectors for enumeration.
https://msdn.microsoft.com/en-us/library/windows/apps/windows.devices.enumeration.deviceinformationpairing.aspx
https://msdn.microsoft.com/en-us/library/windows/apps/windows.devices.bluetooth.bluetoothdevice.aspx
But I also know that you can use direct bluetooth connections on lower level and this way windows won't suggest you pairing. For example, that's how things work with 32feet.net library, discussed in this answer (I worked with it and it was fine, however it is currently unsupported so please beware of it).
First thing to test is the bluetooth protocol used to be RFCOMM in both client and server. Link
Check that both client and server hardware support the RFCOMM
Check the bluetooth versions in both client and server link
based on wikipedia bluetooth has many protocols.
Second is to check windows version
I have developed a Qt application that communicates with a specific bluetooth device. The application works on linux, android and mac flawlessly, but the qbluetooth api is not supported on windows. I have selected the serial api as a workaround, and have successfully done the task using a virtual COM port on the bluetooth device. The problem is that I don't want the end-user to create the COM port, and want to create it in setup time programmatically. I have done an extensive search, but have found no clue on it. Can anyone give me a hint on it? Thanks in advance.
I want to capture distances from sensors, using an Arduino and a Windows Phone device. How can I do that?
The Windows Phone 7 SDK does not give access to the USB port or Bluetooth on the phone, so you can't use that. So I think the best way (and probably only way on Windows Phone 7) would be to communcate over Internet or local network with the Arduino acting as a server which the Windows Phone 7 app connects too.
Here are some examples of an Arduino web server and TCP server.
For the Windows Phone client I would check out either WebClient or sockets.
Windows Phone 8 SDK:
Consider establishing an App to Device communication through Bluetooth API which became available for developers in the release. Bluetooth App to Device application sample, available on MSDN, is the way to go.
There is another option in Windows Phone 8, using Proximity (a set of classes which works with NFC), which is more applicable for a short range communication.
As for Arduino, there is certainly a Bluetooth module.
Windows Phone 7 SDK:
No way to establish a peer-to-peer communication with a third party device. A workaround would be to connect them through a network, as was proposed by Johan.
I have actually made a Windows Phone 8 App that connects to an Arduino using the Sparkfun Bluetooth Silver Modem. Issues is, even after I get them connected, I can't get either the Arduino to receive the input OR I can't get the WP8 App to successfully send to the Arduino...
My GitHub for the project is: https://github.com/lanceseidman/Arduino-Bluetooth-WinPhone8
Hoping everyone can try and help on the project.
My Breadboard photos will be up soon and my Arduino Code.
In Short: I need to detect hotplug events of my USB CDC device by PID/VID and get the corresponding virtual COM port which was created by Windows in Visual C++ and in the end create a dll.
I have a USB CDC device which I need to be notified of when connected/disconnected on Windows. My approach is to use RegisterDeviceNotification and an "invisible" Window to receive WM_DEVICECHANGE notifications. This part is working so far.
Now as far as I found out I need to get the list of USB devices that is plugged, iterate over it and filter out the devices with my PID/VID? I assume that I am then able to get more informations about the device including the COM port?
Is the only way to achieve my goal to use SetupDi calls in setupapi.h? Is using WDK / DDK the only way to achieve my goal?
As soon as that is working I open-source it on http://github.com/vinzenzweber/USBEventHandler. The Mac version is available already!
After digging through tons of useless documentation at msdn and some debugging I found the missing link: SetupDi calls in setupapi.h: More infos as well as source code for Mac and Windows can be found in my USBEventHandler project at github.com with sources for Mac and Windows.